I just thought of something you can try. Use a program like ImDisk (http://www.ltr-data.se/opencode.html/#ImDisk) and create a little RAM drive on your system and assign drive D: to it. You could just assign a minimal amount of ram to it. Then see if that error goes away. Or maybe it will produce a different error letting you know what file it was looking for. Or if was trying to write something there, you can see what file that is and that should give a clue about the source of it.